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The placement of a carbonyl group in the tether chain was discarded as it would probably diminish the reactivity of the acyl radical.
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38
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2442630750
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33644761525
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No cyclization was observed when selenoester 8 was irradiated at 80 °C without AIBN or when heated in the presence of AIBN without irradiation.
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45
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3SnH instead of TTMSS led to phenol 12 in a lower yield (70%).
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47
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